Determination of Tm Charge State in PbTe(Tm) by XANES Method Full article
Conference |
X-Ray Absorption Fine Structure : 12th International Conference 22-27 Jun 2003 , Malmö/Lund |
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Journal |
Physica Scripta
ISSN: 0281-1847 , E-ISSN: 0031-8949 |
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Output data | Year: 2005, Volume: T115, Pages: 365-368 Pages count : 4 | ||||||
Authors |
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Abstract:
The local environment and the charge state of Tm atoms in PbTe were studied by EXAFS and XANES techniques at the LIII absorption edge of Tm (8.648 keV). It was revealed that Tm atoms predominantly substitute for Pb atoms in PbTe and are surrounded by Te atoms at a distance of 2.99 ± 0.02 Å. Tm atoms were found to be in Tm3+ charge state independently of the section of the phase diagram used for Tm doping. These results are in agreement with the results of previous investigation of the Pb-Tm-Te phase diagram. Electrical studies of Pb-Te-Tm with large deviation from stoichiometry revealed that the electron concentration was about one order of magnitude lower than the total Tm concentration and remained nearly constant (about 1019 cm−3) while varying the sample composition. Reduced electrical activity of the Tm impurity in PbTe was explained by effect of selfcompensation.
Cite:
Lebedev A.I.
, Sluchinskaya I.A.
, Nikitenko S.G.
, Dorofeev S.G.
Determination of Tm Charge State in PbTe(Tm) by XANES Method
Physica Scripta. 2005. V.T115. P.365-368. WOS Scopus РИНЦ
Determination of Tm Charge State in PbTe(Tm) by XANES Method
Physica Scripta. 2005. V.T115. P.365-368. WOS Scopus РИНЦ
Dates:
Submitted: | Jun 26, 2003 |
Accepted: | Nov 4, 2003 |
Identifiers:
Web of science | WOS:000204272100103 |
Scopus | 2-s2.0-42149185009 |
Elibrary | 15042569 |
Chemical Abstracts | 2005:477075 |
Chemical Abstracts (print) | 144:242477 |
OpenAlex | W1972474595 |